2. 給手勢設置代理
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(respondsToTapGesture:)];
tap.delegate = self;
[self.view addGestureRecognizer:tap];
3.實現代理方法
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
// 點擊的view的類名
NSLog(@"%@", NSStringFromClass([touch.view class]));
// 點擊了tableViewCell，view的類名為UITableViewCellContentView，則不接收Touch點擊事件
if ([NSStringFromClass([touch.view class]) isEqualToString:@"UITableViewCellContentView"]) {
return NO;
}
return? YES;
}
想要的效果 :既觸發didSelectItemAtIndexPath方法，又能在CollectionView自身上處理TapGesture
問題 : collectionView沒有內容視圖, 不能像上面那樣解決沖突
解決方法 :
1. 遵守代理協議 UIGestureRecognizerDelegate
2. 給手勢設置代理
UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(cancelDelete)];
apGestureRecognizer.delegate = self;? [註意點]
[self.collectionview addGestureRecognizer:tapGestureRecognizer];
3. self要實現UIGestureRecognizerDelegate協議，其中就有gestureRecognizer:shouldReceiveTouch:方法
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
if (touch.view != self.collectionView) {
return NO;
}else {
return YES;
}
}